Describe the input file or files
for sorting or merging
by following the procedure below.
Procedure
- Write one or more
SELECT
clauses in the FILE-CONTROL
paragraph
of the ENVIRONMENT DIVISION
to name the input files.
For example:
ENVIRONMENT DIVISION.
INPUT-OUTPUT SECTION.
FILE-CONTROL.
SELECT Input-File ASSIGN TO InFile.
Input-File is the name of the file
in your program. Use this name to refer to the file.
- Describe the input file (or files when merging) in an
FD
entry
in the FILE SECTION
of the DATA DIVISION
.
For example:
DATA DIVISION.
FILE SECTION.
FD Input-File
RECORD CONTAINS 100 CHARACTERS.
01 Input-Record PIC X(100).